A personal, guided tour to the best scoops and stories every day in The Wall Street Journal, from Editor in Chief Gerard Baker.

The group calling itself Islamic State is finding fertile ground among Lebanon’s Sunni community in the same kind of resentment that propelled the militants’ rise in Syria and Iraq. This sense of injustice, in a region now consumed by sectarian conflict, has been inflamed by Hezbollah’s intervention in the Syrian civil war to help President Bashar al-Assad’s regime. In Iraq, meanwhile, we note that Islamic State fighters launched a series of attacks against Peshmerga positions yesterday. But in...